Read more 5-DIGIT This LCD is lucid and easy to read. It can show a single time filling amount and will save the total filling amount. EASY TO USE Real-time error coefficient calibration, easy to operate, provide units of L, GAL, PT, and QT and support low battery warning. WIDE APPLICATION Used for filling fluid such as gear oil, engine oil, antifreeze, it is a great oil filling equipment for factories, gas stations, etc. Read more Specifications: 5-digit liquid crystal display for both volume each time and total 4 units: L, GAL, PT, and QT 4 buttons: "move", "reset" (front of the meter), "1" and "2" (back of the meter) Weight: 4.4lb (2kg) Package Content: 1 x Oil Transfer Pump And Control Valve Air Operated Oil Transfer Pump Control Valve The electronic oil meter gun with rigid tube and manual tip or flexible hose and semi-auto tip, with the appropriate connection to establish a controlled flow through the meter. The electronic oil meter gun with rigid tube and manual tip or flexible hose and semi-auto tip, with the appropriate connection to establish a controlled flow through the meter. Feature: Show the exact amount of fluid dispensed Low battery indicator 4.4lb Easy to use Read more Details of operation: Before putting into operation Check the technical data of the installation match with those of the lube meter Once the meter has been installed, please make sure that no air pressure shocks or particles can damage the meter Please check all connections to leakage Change the battery Button usage Read more